Tax Team Administrator

Irwin Mitchell LLP; Chichester; On-site; GBP 22,000 - 28,000; Full time

Benefits offered by this job

Full training provided

Job summary

Irwin Mitchell LLP in Chichester is seeking a Tax Team Administrator to support the Tax, Trust and Compliance Team. This office-based role offers a valuable starting point for someone keen to develop knowledge within tax administration in a collaborative environment.

You will manage end-to-end client onboarding, prepare engagement documents, maintain records, run reports from tax software, assist with compliance and file reviews, and support fee earners with administrative tasks.

Qualifications

• Strong IT skills and proficiency in Microsoft Office (Word/Excel)
• Excellent verbal and written communication with clients and colleagues
• Proactive, enthusiastic approach with a strong work ethic and willingness to support the team
• Exceptional attention to detail and accuracy when handling information and documentation
• Ability to build effective working relationships with stakeholders at all levels

Responsibilities

• Managing end-to-end client onboarding, opening new matters and documenting engagement terms
• Maintaining client records and workflows to support case management and compliance
• Producing and analysing reports from tax software for reminders and client communications
• Coordinating information requests for personal tax clients and supporting documentation
• Producing management and client insight reports including satisfaction metrics
• Preparing and issuing tax returns and related correspondence to clients and HMRC
• Handling original client documentation securely and logging information for tax return prep
• Assisting with file reviews and compliance for advisory matters
• Submitting tax returns electronically to HMRC and recording documentation in DMS
• Generating ad hoc reports to support business development and legislative updates
• Updating client engagement documentation and supporting client closure processes

Skills

Strong IT skills

Excellent verbal and written comms

Proactive and enthusiastic

Attention to detail

Organisational skills

Independent work

Relationship building

Experience in finance/tax admin

Knowledge of HMRC processes

Experience preparing reports

Tools

Microsoft Office

Word

Excel

Job description

As one of the UK’s leading law firms, we’re here for the people and businesses who rely on us at life’s important moments - made possible by our colleagues who bring the expertise, judgement and care that makes the difference.

Our colleagues bring Irwin Mitchell to life every day, so it matters that you feel valued from the very first day and aretrusted with the responsibility, in the right culture, to do the best work of your careers. Everyone’s path here is different, but we share a desire to help our business make a real impact.

Where possible we will support our colleagues to work in a way that works for them, for us and most importantly our clients. Please speak to a member of our Recruitment and Onboarding team for more information.

Your Role and What You'll Be Doing

We are seeking an enthusiastic and organised Tax Team Administrator to join our Tax, Trust and Compliance Team in Chichester. This is an excellent opportunity for someone at the beginning of their career who would enjoy detailed administrative work and is keen to develop their knowledge within a supportive and collaborative environment.

You will play a key role in supporting the team, ensuring client matters are managed efficiently and deadlines are met. This position offers valuable exposure to tax compliance processes and provides an excellent platform for career development.

This is an office-based role, working from our Chichester office five days per week as part of a team of three Tax Team Administrators.

As a Tax Team Administrator, you will assist with:

• Managing the end-to-end client onboarding process, including opening new matters, preparing engagement documentation, setting up records within our systems, obtaining HMRC authorisations, and conducting client identification checks.
• Maintaining workflows and ensuring all client records are accurately established to support effective case management and compliance.
• Producing and analysing reports from our tax software to support tax payment reminders, information requests, and client communications.
• Coordinating annual information requests for personal tax clients, including preparing checklists, and supporting documentation.
• Producing regular management and client insight reports, including client satisfaction and new client reporting.
• Preparing, printing, and issuing correspondence, tax returns, and other documentation to clients and HMRC.
• Managing and safeguarding original client documentation received by the team.
• Logging and processing client information for tax return preparation, including obtaining information from HMRC and supporting fee earners with administrative aspects of file reviews.
• Assisting with compliance and file review processes for advisory matters.
• Submitting tax returns electronically to HMRC and ensuring all documentation is accurately recorded within our document management system.
• Producing ad hoc reports to support business development initiatives and legislative updates.
• Updating client engagement documentation and maintaining accurate client records.
• Supporting the client closure process when matters are completed.

About You

Full training will be provided, so prior experience in Trusts and Tax is not essential. We're looking for a motivated individual with a positive attitude, enthusiasm to learn, and a genuine interest in developing a career in this area.

• Strong IT skills, including proficiency in Microsoft Office, particularly Word and Excel.
• Excellent verbal and written communication skills, with the confidence to interact professionally with clients and colleagues.
• A proactive, enthusiastic approach with a strong work ethic and willingness to support the wider team.
• Exceptional attention to detail and a high level of accuracy when handling information and documentation.
• The ability to build effective working relationships and communicate confidently with stakeholders at all levels.
• Strong organisational skills, with the ability to manage workloads independently and prioritise tasks effectively.
• Sound judgement, including recognising when issues need to be escalated to senior colleagues.
• The ability to work both independently and collaboratively within a team environment.
• Previous experience in a finance or tax administrative role
• Experience working within an accountancy practice
• Knowledge of HMRC processes, personal tax, trusts, or estate administration
• Experience preparing reports and working with Excel.

Our Approach to Reward and Wellbeing

• 25 days' holiday as standard, rising to 28 days depending on role level, plus bank holidays and the option to purchase additional leave.
• Opportunities to share in our success through annual pay and bonus review processes for eligible colleagues.
• Health and wellbeing support, including Westfield Health and Digital GP access.
• Competitive pension arrangements to help you plan for the future.
• Two paid volunteering days every year to support causes that matter to you.
• Access to a range of colleague discounts and lifestyle benefits to support you both inside and outside of work.

We also offer a wide range of well-being initiatives to encourage positive mental health both in and out of the workplace and to make sure you’re fully supported.

In 2026, Irwin Mitchell was recognised in the Sunday Times Best Places to Work guide and was the only law firm included in the 'Very Big' organisation category

Our responsible business programmes are fundamental to who we are and our purpose. We’re committed to being a diverse and inclusive workplace where our colleagues can flourish, and we have established a number of inclusion network groups across our business to support this aim.

Our commitment to Social Responsibility, community investment activity and tackling climate change is a fundamental part of who we are. It’s made up of four strands: Our People, Our Community, Our Environment and Our Pro Bono.

Artificial Intelligence (AI) is becoming an increasingly common part of modern working life. If you choose to use AI tools as part of your application or interview preparation, please review our AI in Recruitment Candidate Guidance https://careers.irwinmitchell.com/file/downloadfile/AIcandidate/PDF

As part of joining the Irwin Mitchell Group, all successful applicants are required to complete our employment screening process. We carry out pre employment screening to establish your eligibility to work in the UK, and understand any criminal records or adverse financial history.

Our onboarding processes are designed to help us maintain the high standards of trust, integrity and professionalism expected by our colleagues, to protect the interests of the Group, clients, partners and other stakeholders.

Checks are conducted by trusted 3rd parties and the employment screening process will fully comply with Data Protection and other applicable laws.

Irwin Mitchell LLP is an equal opportunity employer.